Supplemental holding device fob



APPucATmN FILED JAN. 1"). 1919..

Patented May 6, 1919.

2 SHEETS-SHEET] INVENTOR' A'i'TO NEY W. PFLEEGER.

SUPPLEMENTAL HOLDING DEVICE FOR moron VEHICLES.

APPLICATION FILED IAN. 10. I919. L

Patented May 6, 1919 2 SHEETS-4M 2 Ai'TORNEY a citizen lof the United States, residin wILLIm-rrLEEeEB; or NoizwALK, eomvnc rieu'r.

SUPPLEMENTAL HOLDING pEvIcn ron moronfvnmcrns.

To all whom it mag} concern:

Be it-kiiown that 1, WILLIAM' Priinneen, at

- -Norwalk',' -o'ouiity of Fairfield, State of p on-' nectic'ut, have invented an Improvement in Supplemental Holding Devices for Motor- Vehicles, of which the following is a specificatiom This invention hasfor its object to pro vide. a locking or holding device for shafts and axles which is especially-adapted for- "use as a supplement tothe brakes upon heavy motor cars and trucks, and which will securely hold the vehicle against movement headed,-. Should the brakes fail to work, or

down hill, no matter which way it may; be

' may be used to render assurance doubly sure .be applied to wheel carrying axles, or to should it be required that the vehicle stand for any. length of time or that the driver leave. his seat. My novel holding device may propeller shafts, so called, or to jack shafts forming :a part of the driving mechanism,

the device consisting of few parts, all inex pensive toJmake and easy to assemble, and being practically impossible to get out of repair, I

With these and other objects in view I i have devised the noyel holding device which I will now describe referring to the accompanying drawings forming a part of this specification and using reference characters Y to indicate the several parts.

Figure l is a fragmentary view showing in elevation so much of the chassis of a ino tiir'struck as is necessary to illustrate the application to a rear axle of my novel holding-'device,'the axle being in section, the wheel being supposed to be fixed thereto, and

the pawl being in looking engagement-with the ratchet;

Fig. 2 "is an elevation, on an enlarged scale, of the holding 1 device detached the pawl being disengaged from the ratchet;

Fig. 3 .1s a-"sectionon the line 3-3 in r1g. 2, looking in the direction of the ar- 5 rows;

' Figs. 4, -5, 6, and 7 are perspective views of members of the ratchet disassembled;

{-:Fig. 8 isa view similar to Fig. 1, showing. the holdingglevice inclosed in a case and applied to the "propeller shaft-of a motor truck;

Fig. 9 is a section, on an enlarged scale,

on the line 9-9 in Fig. 8, and

s-iiFig'i-lm iaefragmentary view showing a I Specification of Ietters Patent.

- Patented May 6, 1919.,

Application filed January 10, 1919f Serial No. 270,808.

with a lock, in elevation.

- In the application ofthe inventionillustrated in Fig. 1, 10 denotes a rear axle of a form of a controlling mechanism provided motor truck and 11 one of the rear wheels.

two other body members, indicated by 14. The rim members are provided with peripheral notches 15, the ends of which are angular and may or may not be slightly undercut, on their inner sides with V-shaped webs 16, and at their ends with flanges 17. The -corresponding flanges at the respective-ends of the rim members are adj ustably secured together by bolts 18 which pass through one of the flanges and engage the others Body members 13 are provided with hub flanges 19, one of which is locked to the axle by a set screw 20, and with diametrical flanges 31. Body members 13 are adjustably se' cured together by bolts '32 which pass through one of the flanges 31 and engage the other. The inner edges of body members 13 and 14 are beveled at an angle to Correspond with the angle of webs 16 on the rim members. Body members 13 and 14 are locked to each other and the rim members are locked in place between them, by bolts 21 which pass throughthe body members and are provided with 111K322, springs 23 .12, two body members, indicated by 13, and

being interposed between the heads of the bolts, and the nuts, and the respective body members. This construction enablesme to effect any adjustment of the rim members that may be found necessary in assembling,

and to compensate for wear after long continued use. p

' The pawl is pivoted to a suitable bracket, as at 2 l,'is provided with an engaging tooth 25 at each end, and on its top with a boss 26 which is adapted tobe engaged by a spring 27, shown as secured to the bracket, and suitably shapedto coiiperate withthe boss and normally retain the pawl in the disengaged position, as in Fig. 2. The walls of the engaging teethjopposite; the engaging angles arebeveled ,or curved to form disengaging walls 30,-so that when a vehicle which is headed up hill-is started forward, after being locked, the projecting rear angle of the ei'igagctl llULCll in the ratchet-will engage the corresponding wall 30 of the pawl and throw the pawl out of engagement with the notch independently of the pawl oper-.

ating means, in which position it will be retained by spring 27, as in Fig. 2. If the vehicle has been headed down hill backward movement thereofi will cause an angle of the engaged ratchet notch to throw the pawl out of engagement with-the ratchet, in which poiition it will be retained by the spring as beore.

The special manner'in which the pawl is operated and caused to engage the ratchet' is not an essential part of the invention. In

F ig. l I' have shown the pawl as operated by means of a rod 28, pne end of which is operatively connected to the pawl and the other to an operatinglever 29, which is con-e veniently placed for control by the driver. In the-form illustrated in Figs. 8, 9 and 10 the holding deviceis shown as applied to the propeller shaft of a truck, indicated by 38,

instead of to a rear axle. The holding de vice is inclosed in a case 33 provided with a bracket 34 which is secured to' a cross piece 35 of the frame of the chassis. rigidly secured in angle flanges of the cross piece and pass loosely through the bracket: Springs 37 are preferably .interposed be tween the bracket and the angle flanges to take up .road shocks and the vibration of the propeller shaft. Theratchet is secured to the shaft in any suitable manner, as by means of a-set screw, as shown m Fig. 2.

The pawl is rigidly secured toa shaft 39 mounted to oscillate in the case and carrying an arm 40 which is connected by means of rods and bell crank levers with an arm 41 on an operating shaft 422, mounted to oscillate in any convenient place, ordinarily on the instrument-board. This'shaft is Provided with an operating arm 43 and with suitable lock-' ing mechanism, indicated by 4d, so that the operating shaft and consequently the pawl shaft and paw] can be locked in either of its holding positions, that is so as to hold the vehicle when headed either up hill or,

down hill, thus supplementing or doing away with other locking meehanism for ,a truck or car. The operation will be obvious from the drawing. Suppose the vehicle to he headed down hill should the brakes fail to act efiectively or should it be required to leave the vehicle standing, the operating l g i nt;w k fl fl ehicle against forward movement,

Bolts 36 are lever wou-ld. b-.-swung forward, as in Fig. 1,

which wouldl 'throw the upper engagin man; of the pawl lieratchet, and efl'ectually b ldtl fi" brakesiail quired'to "lea hi clebeheaded up hill and the e'rate eli'ectively or it here- '.the vehicle standin the op- 4 crating lever woould b'e pulledbackward which would'throw thelowcr'engaging tooth of the pawl into engagement with the ratchet and lock the vehicle against-backward movement just as effectively. v i

'Haying thus described my invention, I claim: v 4 I '1. A device of the character described comprising a ratchet havingangular notches,

and edges beveled to'cor respondwith the 'web, other body members having corresponding be'vels, and boltswhich seciire the l 'body mel'nbers to each other and adjustably" secure the rim members in place, a pawl hav ing oppositely acting teeth which engage the notches, and means for placing eithertooth in engagement with a notch) 1 3. A composite ratchet consisting of two rim members having V-shaped webs, angular notches, flanges at their ends and bolts by which they are adj ustablysecured together, body members having edges beveled to correspond with the web, hub flanges for attachment to a shaft or axle, diametri'cal flanges and .bolts by' which they are adjustably secured together, other 'body members having corresponding bevels, bolts passing th ough complementary body members and having nuts, and springs between the heads of the bolts and nuts and the body members, whereby said body members are adjustably secured together and the rim members are adjustably secured in place.

:In' testimony whereof- I aflix my signature. i

WM. PFLEEGER.

,- -'(as seen in Fig. 1) into 

